In a matter of about six months, I've learned quite a bit about how both those things work and about how exciting it is to run climate experiments. (sites.uci.edu)
They compared that stream gauge data with information gathered over more than a dozen years by NASA's Gravity Recovery and Climate Experiment satellites, which can show what's called «basin wetness.» (scientificamerican.com)
This spring, NASA and the German Research Centre for Geosciences are scheduled to launch the Gravity Recovery and Climate Experiment Follow - On (GRACE - FO) mission, twin satellites that will continue the original GRACE mission's legacy of tracking fluctuations in Earth's gravity field in order to detect changes in mass, including the mass of ice sheets and aquifers. (jpl.nasa.gov)